I'm trying to help my friend decide on a new surname. She wants it to start with 'Merry', or possibly 'Merri'.
Merryweather is the obvious option, but she's not sure about it. Others we've come up with are:
Merrywell
Merrywood
Merrygold (too much like marigold I think!)
Merryfield
And she loves Merrywinter but thinks it's a bit YA fantasy genre 
She has a nice, simple first name that goes with most surnames, and no middle name to contend with.
Any more suggestions would be appreciated!