I’m curious if you know any siblings who have names that are essentially the same. Different variations, feminine and masculine forms of the same name, diminutives from the same name …
For example:
I know a brother and sister named Michael and Michelle.
And I know young sisters who are Elizabeth (nn Beth) and Elsie (which is also a diminutive of Elizabeth).
Any other examples?
I know sisters named [name_f]Sally[/name_f] and [name_f]Sarah[/name_f] (Sally being a diminutive of Sarah)! I joked that they just needed a [name_f]Sadie[/name_f] to complete the set, but they didn’t get it 
I also mentioned this in another thread, but I know B/G twins [name_m]Eugene[/name_m] and Eugenie!!
i know sisters caroline and charlotte, and brothers evan and zane! i do think the names are awfully nice together, despite essentially being the same name! 
that’s awesome 
A friend of mine is [name_f]Isabella[/name_f] with a twin [name_f]Elizabeth[/name_f]!
[name_f]My[/name_f] father and his sister are named [name_m]Nikos[/name_m] and [name_u]Nikki[/name_u].
oh no!
I’ve encountered:
[name_f]Isabelle[/name_f] and [name_f]Eliza[/name_f]
[name_u]Evan[/name_u] and [name_u]Jack[/name_u]
[name_f]Mary[/name_f] and [name_u]Percy[/name_u] [name_u]Shelley[/name_u] named both of their daughters together [name_f]Clara[/name_f] (one is just [name_f]Clara[/name_f], the other [name_f]Clara[/name_f] [name_f]Evelina[/name_f] 
)
I also remember a family of Supernanny with girls called Mary-Ann and [name_u]Marie[/name_u]
i also know an isabella/elizabeth set!
not quite on the same level, but:
eta: sisters arya and anya!
Sisters [name_f]Caitlin[/name_f] and [name_f]Catherine[/name_f]!
I know twins named [name_f]Anna[/name_f] & [name_f]Mariana[/name_f], and knew another pair of twins called [name_u]Ayan[/name_u] and [name_m]Aryan[/name_m]
[name_f]My[/name_f] coworker’s dad & uncle are called [name_m]Ian[/name_m] and [name_u]John[/name_u]! They’re a Scottish family - so they must have known that [name_m]Ian[/name_m] and [name_u]John[/name_u] are almost the same name…
[name_f]My[/name_f] dad knew a family where the dad and all 5 or 6 kids started with Br-, I don’t remember their exact names but they were all really similar.
There was a family I went to school with who named all their girls with K names – I can’t remember how many there were, I think 5 or 6 sisters – and they had a [name_u]Kirby[/name_u] and a [name_f]Kirsten[/name_f]
I know someone with Ann@b3ll3 & H@nn@h although these aren’t bad, they share the [name_f]Anna[/name_f] part! 
Not siblings but I have a co-worker who’s husbands name is [name_m]Eoin[/name_m] [name_u]Owen[/name_u] with [name_m]Eoin[/name_m] being pronounced like [name_m]Ian[/name_m].
Twins [name_u]Daniel[/name_u] and [name_f]Daniela[/name_f]. Interesting choices.
i used to know siblings isabel and elizabeth !! it was an accident on their parents’ part, and they had a brother in between with an unrelated name. i’ve also known two sets of jane & john.
also, though they’re obviously different names, i know an alice with a brother called alex (short for alexander, but always alex). it gets a bit confusing !
Yes I know some!
[name_f]My[/name_f] friend H@nnah has a sister J3nny who has two sons named Br0dy + C0dy.
[name_f]My[/name_f] friend Ch@ris partner is D@nny and his twin is D@nielle.
I know siblings [name_f]Olivia[/name_f] and [name_m]Oliver[/name_m], nicknamed [name_f]Liv[/name_f] and [name_u]Ollie[/name_u].
I also know siblings [name_f]Hanna[/name_f], [name_f]Anabel[/name_f], and [name_f]Liliana[/name_f]. Their mother is from Central Europe so they wanted names that would work in her native country as well. It seems that Anna-related names fit the bill!
I know at least a pair of siblings named [name_m]João[/name_m] and Joana… And I’ve met twins [name_u]Andre[/name_u] and [name_f]Andreia[/name_f] too. 
I’ve also encountered a brother and sister named [name_u]Maria[/name_u] [name_m]José[/name_m] and [name_m]José[/name_m] [name_u]Maria[/name_u] but they are part of a large group of siblings and have a significant age difference, which disguises the situation a little.
In my Portuguese-speaking countries it’s very common to find sisters with the same first name - [name_u]Maria[/name_u] or [name_f]Ana[/name_f]. For example, [name_u]Maria[/name_u] [name_f]Isabel[/name_f], [name_u]Maria[/name_u] da Glória, [name_u]Maria[/name_u] Antónia and [name_u]Maria[/name_u] [name_f]Beatriz[/name_f]. Perhaps [name_f]Ana[/name_f] [name_f]Catarina[/name_f], [name_f]Ana[/name_f] [name_f]Filipa[/name_f] and [name_f]Ana[/name_f] [name_f]Margarida[/name_f]. Sometimes the boys have [name_u]Maria[/name_u] as their middle name too. [name_u]An[/name_u] example would be [name_m]Eduardo[/name_m] [name_u]Maria[/name_u], [name_u]Maria[/name_u] [name_f]Inês[/name_f], [name_m]Vicente[/name_m] [name_u]Maria[/name_u] and [name_u]Maria[/name_u] [name_f]Teresa[/name_f]. It is especially common in upper class or religious families. I believe this also happens or used to happen in Spanish-speaking countries frequently, but I may be mistaken.