Hi, Garrick (m) is a variation of Gerald. From the Old German, meaning 'spear rule'. It was used in England from the 11th to the 12th century and was probably intrudused by the Normans. the name flourished in Ireland due to the influence or the Fitzgerald ('sons of Gerald') family, the powerful rulers of Kildare. It was probably from Ireland that the name returned to England in the late 19th century.
Rowan (f and m) From the Irish Ruadhan, meaning 'little red-(haired)one'. It was the name of an Irish saint. Once used exclusively for boys, it is now also found as a girl's name, in which case it takes the form Rowanne. Although one of my best friends has got a girl called Rowan. It is a beautiful name for both boy's and girl's. Hope this helped. Good Luck!