Help with a name

Dub63

I saw this street sign in Dublin recently, with two forms of the same name

https://i.imgur.com/Z8LTC18.jpg

One with an I and one without.

Is one wrong, are there different ways to spell it depending on context?

What is the correct translation of Dillon in Irish?

Thanks

gaiscioch

Dub63 wrote: »

I saw this street sign in Dublin recently, with two forms of the same name

https://i.imgur.com/Z8LTC18.jpg

One with an I and one without.

Is one wrong, are there different ways to spell it depending on context?

What is the correct translation of Dillon in Irish?

Thanks

Officially, even though it would seem more logical for adjacent streets with the same English name to be named after the same person or family, both those signs should be:

John Dillon Street: Sráid Sheáin Diolúin
Dillon Place South: Plás an Diolúnaigh Theas

Authoritive Source: www.logainm.ie (Irish Place-names Commission)

Dillon in Irish can be several surnames but the Hiberno-Norman family in Westmeath is usually Díolún.
See here for more

The Dillons= Na Diolúnaigh (if they'really the Norman family above)

When Díolún is in the genitive case ("of") an i is indeed put between the ú and n. E.g. Sráid Sheáin Diolúin = street of Seán Díolún. Although it's not as common as Diolún derives from a 'de' place-name originally, you will see somebody called, say, Seán Ó Díolúin (Seán, descendant of Diolún). For examples.

Dub63

gaiscioch wrote: »

Officially, even though it would seem more logical for adjacent streets with the same English name to be named after the same person or family, both those signs should be:

John Dillon Street: Sráid Sheáin Diolúin
Dillon Place South: Plás an Diolúnaigh Theas

Authoritive Source: www.logainm.ie (Irish Place-names Commission)

Dillon in Irish can be several surnames but the Hiberno-Norman family in Westmeath is usually Díolún.
See here for more

The Dillons= Na Diolúnaigh (if they'really the Norman family above)

When Díolún is in the genitive case ("of") an i is indeed put between the ú and n. E.g. Sráid Sheáin Diolúin = street of Seán Díolún. Although it's not as common as Diolún derives from a 'de' place-name originally, you will see somebody called, say, Seán Ó Díolúin (Seán, descendant of Diolún). For examples.

Thanks, that's a great answer, cleared it up for me.