information from the Rijksmuseum catalog
tree of Jesse: genealogical tree showing Christ's ancestors, sprouting from Jesse's loins (+ donor(s), supplicant(s), whether or not with patron saint(s))
Mary (standing) with the Christ-child in front of her (free-standing); Christ-child lying - FF - Mary sitting or enthroned
aids for prayer, e.g. rosary
David as musician, usually playing the harp
sceptre, staff (symbol of sovereignty)
fenced or walled garden; 'Hortus Conclusus'