Hi
DH and I have been very set on Tess (Tessa on BC) for quite some time. We like that its classic (& hopefully elegant) but underused.
My only reservation all along has been quite a peculiar one. My DF is Terry/Terence. He is called by his nickname Tez/Tezza a lot. He is not a rough or brash man, so he get's away with it not seeming trashy, it more suits his cheeky personality. Nonetheless, it is not the most fabulous of names.
Would you immediately think that Tess/Tessa is therefore named after her grandfather's nickname.