I have used some references material from "Stories in Stone: A Field Guide to Cemetery Symbolism and Iconography" by Douglas Keister in this blog. Fantastic book.
Ferns - symbols of humility, frankness and sincerity.
Urn - reverential accessory or symbol of the veil between earth and the heavens
Ivy - because it is always green, even in harsh conditions, it is normally associated with immortality and fidelity. It can also indicate attachment, friendship and undying affection because it clings for support. The three pointed leaves may also represented the Holy Trinity.
Hourglass - symbolic of time passing rapidly or as the hourglass can be inverted over and over again, it could suggest the cyclical nature of life and death.
Folded Acanthus?
Acanthus - the leaves of this plant are thorny and are often used to symbolise the 'prickly' journey from life to death and then to eternal life.
Celtic cross with clover and harp
Clover - symbol of the trinity. Legend says that St Patrick brought back the clover to Ireland to be an enduring symbol of the trinity. The clover, renamed the shamrock henceforth became the symbol of Ireland. It is also a symbol of vitality because of its abundant growth. Harp - source of divine music and associated with heavenly aspirations. Celtic Cross - the four arms can represented the four elements, or the four provinces of Ireland. The circle joining the four arms is referred to as the 'nimbus'. IHS - represents Christ's name in the greek alphabet: Iota, Eta, Sigma
Man and Child
Decaying figure with child
Laid down angel
Mary adored
Stigmata Jesus
Winged soldier
Tiny Mary