Searching for

I am currently searching for multiple inforformation.  I am looking for clan tartans, coat of arms, or clans the above families may have allied themselves to a particular clans.  I know that the Tansey family hailes from Sligo, Ballymote, and that the Kerns hail from county Mayo.  I have no clue where to start with the Deffley and Summers families.  Any information provided would be most helpful.