Studio mugs with sentimental text - Michelle Freemantle

Two large distinctive, quite heavy studio mugs.
Can't quite tell if they are porcelain or fine stoneware.
Each has text on the inside rim, which then
continues down the handle.

"You cover my days in rays of sunshine,
beaming off a roof on a hot summer's day."

"You add that sparkle when life goes it's pace,
when time passing only shows when night becomes day."

I can't really get started on these squiggly marks.

Great thanks, any further info?

Most intersting, well travelled and diversely trained.
Funny we've not had any before.