The Dennigans of Tomiskey
 

As Dennigan is a variant of Donegan, it is worth considering the locations of surnames such as Donegan, Doonigan and Dunigan according to Griffith.
Taking all of these variants (those of Dennigan and those of Donegan) into account, we find the following – with Donegan variants marked in Green, and Dennigan variants in Yellow.

 

No of Holdings in Parish

Parish

Dennigan Variants

Donegan Variants

Ardagh

1

1

Ballymacormick

6

8

Cashel

 

1

Clonbroney

 

1

Clongesh

2

3

Kilcommock

2

 

Kilglass

 

1

Killashee

1

13

Noughaval

 

1

Rathcline

4

8

Shrule

 

1

Taghsheenod

 

2

Taghshinny

 

2

Templemichael

1

3

This is represented on the map (Page 5), again with Dennigan Parishes in Yellow and Donegan ones in Green.
From this it does seem reasonable to suggest that the Dennigan name is most likely to have come across the Shannon from County Roscommon.

 

Introduction 04 06 08