Both Zak Williams and Zelda Williams, who are the son and daughter of Robin Williams, paid tribute to their father on the seventh anniversary of his passing yesterday.

Robin Williams died in 2014 at the age of 63. Afterwards, it emerged that the actor had been diagnosed with diffuse Lewy body dementia, a neurodegenerative disorder.

Zak Williams is a mental health advocate.

He tweeted: "Dad, seven years ago today you passed on.

"The joy and inspiration you brought to the world carries on in your legacy and in your family, friends, and fans you so loved.

"You lived to bring laughter and to help others. I will be celebrating your memory today. Love you forever."

Robin Williams' son also paid tribute on what would have been the actor's 70th birthday in recent weeks.

"I would want you to know that your incredible spirit lives within us," he wrote on his Instagram account on July 21st.

"Our family will be celebrating you and your memory today. We miss you and love you always!"

Yesterday, Zelda Williams also honoured her father by opening up about grief and reaching out.

She wrote on Twitter: "Sending love out there today to all the folks navigating loss.

"New, old, the connective tissue of that deeply human pain can be hard to bear, but I find it easier sometimes knowing how many others have felt the same sting.

"We're not alone."

If you or anyone you know is struggling at the moment, The Samaritans can be contacted 24/7 either by phone on free to call 116 123, or by email to [email protected]